231321313312 has 24 divisors (see below), whose sum is σ = 458890285392. Its totient is φ = 114777748800.

The previous prime is 231321313271. The next prime is 231321313351. The reversal of 231321313312 is 213313123132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27586614 + ... + 27594997.

It is an arithmetic number, because the mean of its divisors is an integer number (19120428558).

Almost surely, 2^231321313312 is an apocalyptic number.

It is an amenable number.

231321313312 is a deficient number, since it is larger than the sum of its proper divisors (227568972080).

231321313312 is a wasteful number, since it uses less digits than its factorization.

231321313312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55181752 (or 55181744 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

Adding to 231321313312 its reverse (213313123132), we get a palindrome (444634436444).

The spelling of 231321313312 in words is "two hundred thirty-one billion, three hundred twenty-one million, three hundred thirteen thousand, three hundred twelve".